High pressure steam is expanded adiabatically and reversibly through a – McqOptions

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1.	High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?
A.	Δ H = 0 and ΔS = 0
B.	Δ H ≠ 0 and ΔS = 0
C.	Δ H ≠ 0 and ΔS ≠ 0
D.	Δ H = 0 and ΔS ≠ 0
Answer» C. Δ H ≠ 0 and ΔS ≠ 0

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